Alert archive / Florida / Hurricane Watches in 2012

Hurricane Watch 1009, NWS Miami, FL

August 24, 2012Collier County, Miami-Dade County, Monroe County, Florida

NWS Miami, FL issued this hurricane watch at Aug 24, 2012, 11:32 PM EDT for Collier County, Miami-Dade County, Monroe County, Florida. It was in force for 36 hr.

The area

The counties it named.

The facts

Issued: Aug 24, 2012, 11:32 PM EDT (03:32 UTC)
Expired: Aug 26, 2012, 11:32 AM EDT
In force: 36 hr
Issued by: NWS Miami, FL

Counties Collier County, FL, Miami-Dade County, FL, Monroe County, FL

The radar

The Miami radar (KAMX), 54 km from the middle of the area, began a volume at 03:34 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Miami, FL (KMFL), launched 00:00Z, 3.5 hours before the alert went out and 65 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 14 J/kg
Mixed-layer CIN: -336 J/kg
Mixed-layer LCL: 1966 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 67 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this hurricane watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Miami, FL wrote its last area forecast discussion before this hurricane watch went out at Aug 24, 7:26 PM EDT, 4 hours 6 minutes earlier.

Area forecast discussion, Aug 24, 7:26 PM EDT, 4 hours 6 minutes before

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Hazardous weather outlook, Aug 24, 6:30 PM EDT, 5 hours 2 minutes before

HAZARDOUS WEATHER OUTLOOK FOR SOUTH FLORIDA
NATIONAL WEATHER SERVICE MIAMI FL
630 PM EDT FRI AUG 24 2012

AMZ610-630-650-651-670-671-FLZ063-066>075-168-172>174-GMZ656-657-676-
251330-
LAKE OKEECHOBEE-BISCAYNE BAY-
COASTAL WATERS FROM JUPITER INLET TO DEERFIELD BEACH, FL OUT 20 NM-
COASTAL WATERS FROM DEERFIELD BEACH TO OCEAN REEF, FL OUT 20 NM-
WATERS FROM JUPITER INLET TO DEERFIELD BEACH, FL EXTENDING FROM
20 NM TO 60 NM-
WATERS FROM DEERFIELD BEACH TO OCEAN REEF, FL EXTENDING FROM 20 NM
TO THE TERRITORIAL WATERS OF THE BAHAMAS-GLADES-HENDRY-
INLAND PALM BEACH-METRO PALM BEACH-COASTAL COLLIER-INLAND COLLIER-
INLAND BROWARD-METRO BROWARD-INLAND MIAMI DADE-METRO MIAMI DADE-
MAINLAND MONROE-COASTAL PALM BEACH-COASTAL BROWARD-
COASTAL MIAMI DADE-FAR SOUTH MIAMI DADE-
COASTAL WATERS FROM CHOKOLOSKEE TO BONITA BEACH, FL OUT 20 NM-
COASTAL WATERS FROM EAST CAPE SABLE TO CHOKOLOSKEE, FL OUT 20 NM-
GULF WATERS FROM CHOKOLOSKEE TO BONITA BEACH, FL EXTENDING FROM
20 TO 60 NM-
630 PM EDT FRI AUG 24 2012

...STRONG STORMS POSSIBLE...
...HIGH RISK OF RIP CURRENTS EAST COAST BEACHES...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH FLORIDA.

.DAY ONE...TONIGHT

RIP CURRENTS: THERE IS A HIGH RISK OF RIP CURRENTS ALONG THE EAST
COAST BEACHES DUE TO MODERATE TO STRONG EAST TO NORTHEAST WINDS.

THUNDERSTORMS: SCATTERED THUNDERSTORMS WILL BE POSSIBLE. FREQUENT
LIGHTNING...GUSTY WINDS...AND HEAVY DOWNPOURS WILL REMAIN
POSSIBLE IN THE HEAVIER STORMS THAT DEVELOP.

WINDS: WIND GUSTS IN THE 40 TO 55 MPH RANGE WILL BE POSSIBLE IN
AND AROUND ANY OF THE STRONGER STORMS THAT DEVELOP.

FLOODING: SCATTERED THUNDERSTORMS COULD RESULT IN PONDING OF WATER
IN POORLY DRAINED AREAS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

FOR THE LATEST INFORMATION ON TROPICAL STORM ISAAC, PLEASE REFER
TO THE LATEST HURRICANE LOCAL STATEMENT.

OTHERWISE, THERE WILL BE A CHANCE OF SHOWERS AND THUNDERSTORMS EACH
DAY MAINLY IN THE AFTERNOON AND EVENING HOURS. AT THIS TIME NO
ACTIVITY OUTSIDE OF THE ORDINARY IS EXPECTED WITH THE MAIN CONCERN
BEING LIGHTNING STRIKES.

.SPOTTER INFORMATION STATEMENT...
WIDESPREAD SPOTTER ACTIVATION IS NOT ANTICIPATED, HOWEVER INDIVIDUAL
SPOTTERS ARE ENCOURAGED TO REPORT HIGH WIND AND FLOODING TO THE
NATIONAL WEATHER SERVICE FORECAST OFFICE IN MIAMI.

FOR MORE INFORMATION...VISIT THE NATIONAL WEATHER SERVICE IN
MIAMI WEBSITE AT WWW.WEATHER.GOV/MIAMI.

In the hours before

Special weather statement, Aug 24, 7:40 PM EDT, 3 hours 52 minutes before

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Special weather statement, Aug 24, 9:16 PM EDT, 2 hours 16 minutes before

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Special weather statement, Aug 24, 9:28 PM EDT, 2 hours 4 minutes before

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Special weather statement, Aug 24, 10:10 PM EDT, 1 hour 22 minutes before

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Special weather statement, Aug 24, 10:29 PM EDT, 1 hour 3 minutes before

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Special weather statement, Aug 24, 10:41 PM EDT, 51 minutes before

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The office that day

Everything else NWS Miami, FL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 24, 8:38 PM EDT	Special Marine Warning	MFL		67 min
Aug 24, 9:16 PM EDT	Special Weather Statement	MFL	Palm Beach	29 min
Aug 24, 9:19 PM EDT	Special Marine Warning	MFL		56 min
Aug 24, 10:10 PM EDT	Special Weather Statement	MFL	Palm Beach	50 min
Aug 24, 10:29 PM EDT	Special Weather Statement	MFL	Broward, Miami-Dade, Monroe	61 min
Aug 24, 10:33 PM EDT	Special Marine Warning	MFL		117 min
Aug 24, 10:41 PM EDT	Special Weather Statement	MFL	Palm Beach	64 min
Aug 24, 11:32 PM EDT	Tropical Storm Warning	MFL	Broward, Collier, Glades, Hendry, Miami-Dade, Monroe and 1 more	60 hr
Aug 25, 5:10 AM EDT	Hurricane Warning	MFL	Collier, Miami-Dade, Monroe	36 hr
Aug 25, 5:29 AM EDT	Special Weather Statement	MFL	Broward	76 min
Aug 25, 5:45 AM EDT	Special Marine Warning	MFL		27 min
Aug 25, 7:03 AM EDT	Special Marine Warning	MFL		57 min
Aug 25, 7:27 AM EDT	Special Marine Warning	MFL		63 min
Aug 25, 8:01 AM EDT	Severe Thunderstorm Warning	MFL	Miami-Dade	29 min
Aug 25, 2:02 PM EDT	Special Marine Warning	MFL		58 min
Aug 25, 2:41 PM EDT	Special Marine Warning	MFL		28 min
Aug 25, 5:58 PM EDT	Special Weather Statement	MFL	Broward	32 min

Nearby

Hurricane Watches in Florida, 2012 Every hurricane watch in 2012

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.